Page 125 - Knowledge Organiser Yr9 24-25

Knowledge Base: Science B1: Cell Biology Year 9
Knowledge Base: Science
5.1
5.2
3.35.3
B1: Cell Biology
Year: 9 Autumn
3.14
5.14 What is the function of a phloe
What is the function of a phloem
cell?
cell?
m To transport sugars.
To transport sugars.
3.15
5.15 Give two ways phloem cells ar
Give two ways phloem cells are
specialised.
specialised.
Composed of:
Composed of:
• sieve tubes which are arranged • sieve tubes which are arranged end to
end to end to form a tube - to
end to form a tube – to create a column
create a column for sugar to
for sugar to move through.
move through.
• companion cells – provide the sieve
• companion cells – provide the tubes with energy for the movement
sieve tubes with energy for the
of the sugars.
3.1
What is a specialised cell?
A cell with a specific function.
5. Cell Specialisation
3. Cell Specialisation
What is a specialised cell?
A cell with a specific function.
e
3.2
Name three specialised animal cells. Sperm cell, nerve cell, muscle cell.
Name three specialised animal cells. Sperm cell, nerve cell, muscle cell.
WhaWt ihsatthies ftuhnecftiuonnctoiofnaospf earsmpecremll?cell?To swim tTotshweimeggtoatnhdefegrtigliasneditf.ertilise it.
3.45.4
GiveGtiwveotwaoyswsapyesrsmpecremllscaerlels are specsipaelisceiadli.sed.
• Tail – fo•r swTaimilm– finogr.swimming.
• Lots of•mitLoocthsoonfdmriaito–cthoornedlerias–e to releas
energy foresnweirmgmy fionrg.swimming.
3.55.5
WhaWt ihsatthies ftuhnecftiuonnctoiofnaonfearvneecrevell?cel
l?To carry eTloectarricryalemleecstsriacgael smaerossuangdesthaeroun body. body.
3.65.6
GiveGtiwveotwaoyswnaeyrsvneecrevlelscaerlelsare specsipaelisceiadli.sed.
• Dendrit•es –Detondcroitnense–cttotocotnhneerct to other nerve cellsc.ells.
•Verylon•g–Vteorycalornryge–letcotrciacrarlymeelescstargiceaslm over long doivstearnlcoensg. distances.
3.75.7
WhaWtihsatthiesftuhnecftiuonnctoiofnaomfuasmcleusclec cell?
ellT?o contraTcot aconndtrealcatxatnodarlleolwaxmtovaellmowenmt ov of the boodfy.the body.
3.85.8
GiveGtiwveotwaoyswmayussmcleusccellelscaerlels are specsipaelisceiadli.sed.
• Lots of•mitLoocthsoonfdmriaito–cthoornedlerias–e to releas energyforecnoenrtgraycftioornc.ontraction.
•Long–•toaLlolonwg–sptaocaellfowrcsopnatcreacftioorncontr (getting sh(ogrettetri)n.g shorter).
3.95.9
NamNeafmouerfsopuercsipaleisceiadlipseladnptlcaenltlsc.ells.
e
d the
nerve essages
ement
e action
Root hairRcoeollts,hxayirlecmellcse, lxlsy,lepmhlocelmls,cpehlllso.em cells. rom the
movement of the sugars.
Nerve Cell Sperm Cell
3.150.1
0WhaWtihsatthiesftuhnecftiuonnctoiofnrooftrhoaoitrhairc cells.
llTso. absorbTowabtesrorabndwmatienrearanldiomnisnferroaml ions f the soil. soil.
3.151.1
1GiveGtiwveotwaoyswraoyostrhoaoitrhcealilrscaerlelsare specsipaelisceiadli.sed.
•Largesu•rfaLcaergaeresaur–fafocermaraexaim–ufomrmaxim absorptiona.bsorption.
• No chlo•ropNlaostcsh–loarospnloasptsho–taosynnothpehsoistosy cantakeplcaacnetuankdeeprlgarcoeuunndd.erground.
3.152.12WhaWt ihsatthies ftuhnecftiuonnctoiofnxyolef mxylceemllsc?ells?To transpToorttrwaantsepr.ort water.
um nthesis
ollow ater to
the sting.
e
Root Hair Cell
Muscle Cell
3.153.1
3GiveGtiwveotwaoyswxaylsemxylcemllscaerlelsare specsipaelisceiadli.sed.
• Cells ar•ranCgeldlstaorfroarnmgeaddteoafdorhmollaodwead h tube – to ctruebaete–atococlruematnefoarcwolautmerntofor w move thromugohv.e through.
• Made f•romMliagdneinfr–osmtrelignngitnhe–nstrtehnegthens xylem andxpyrlevmenatnsditpfreovmenbtusristtifnrogm. bur
125